/*
* FLINT PARTICLE SYSTEM
* .....................
* 
* Author: Richard Lord
* Copyright (c) Richard Lord 2008-2011
* http://flintparticles.org
* 
* 
* Licence Agreement
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

package org.flintparticles.common.initializers;

import nme.errors.Error;
import org.flintparticles.common.particles.Particle;
import org.flintparticles.common.emitters.Emitter;
import org.flintparticles.common.initializers.SetImageProperties;
import org.flintparticles.common.initializers.InitializerBase;

/**
 * The SetImageProperties Initializer can be used to set any properties of a particle's
 * image object. This Initializer has a single property that is any object whose properties
 * should be copied to the image object.
 * 
 * This Initializer has a priority of -10 so that it runs after the image setting Initializers,
 * which have a priority of zero.
 */

class SetImageProperties extends InitializerBase
{
	public var properties(propertiesGetter, propertiesSetter):Dynamic;
	
	private var _properties:Dynamic;
	
	/**
	 * The constructor creates a SetImageProperties initializer for use by 
	 * an emitter. To apply a SetImageProperties to all particles created by an emitter,
	 * use the emitter's addInitializer method.
	 * 
	 * @param properties An object or dictionary containing the properties to set on the 
	 * particle's image object. The name of the properties on this object must match the
	 * names of the properties on the particle's image object.
	 * 
	 * @see org.flintparticles.common.emitters.Emitter#addInitializer()
	 */
	public function new( properties : Dynamic )
	{
		super();
		_priority = -10;
		_properties = properties;
	}
	
	/**
	 * An object or dictionary containing the properties to set on the particle's image 
	 * object. The name of the properties on this object must match the names of the 
	 * properties on the particle's image object.
	 */
	private function propertiesGetter():Dynamic
	{
		return _properties;
	}
	private function propertiesSetter( value:Dynamic ):Dynamic
	{
		_properties = value;
		return _properties;
	}
	
	/**
	 * @inheritDoc
	 */
	override public function initialize( emitter:Emitter, particle:Particle ):Void
	{
		if( particle.image == null )
		{
			throw new Error( "Attempting to set image properties when no image is set" );
		}
		var img:Dynamic = particle.image;
		for( name in Reflect.fields(_properties) )
		{
			//if( img.hasOwnProperty( name ) )
			if( Reflect.hasField(img, name) )
			{
				//img[name] = _properties[name];
				Reflect.setField(img, name, Reflect.field(_properties, name));
			}
		}
	}
}
